Bookshelf



FIG. 1 is a front elevation view of the bookshelf showing my new design.

FIG. 2 is a rear elevation view of the bookshelf

FIG. 3 is a left side elevation view of the bookshelf, the right elevation view being a mirror image thereof;

FIG. 4 is a top plan view of the bookshelf; and,

FIG. 5 is an isometric view of the bookshelf. 

The ornamental design for a bookshelf, as shown and described. 